android安卓edittext自动弹出数字键盘

		et.setFocusable(true);
		et.setFocusableInTouchMode(true);
		et.setInputType(EditorInfo.TYPE_CLASS_NUMBER); 
		Timer timer = new Timer();
		timer.schedule(new TimerTask()
		{
			public void run() 
			{
				InputMethodManager inputManager =(InputMethodManager)et.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
				inputManager.showSoftInput(et, 0);
			}
		}, 500);